고등학교 가정과목의 피복재료 실험 방법개선

The Improvement of Experimental Method to Textiles Home Economics in High School

This study was intended to provide an improved method for testing in high school. Four kinds of test subjects were selected and applied to the classes. Problems of the methods in the textbooks were corrected as follows; 1) Burning test; The number of specimen is reduced to 3 kinds of fibers(cotton, wool, and polyester) and recommends are given to make result by comparing with the burning characteristics of paper and hair. 2) Absorbency test; Test Method is changed to drop test. The result is recorded by measuring time required for the water drops absorbed to the specimen. 3) Wrinkle recovery test; A glass is provided instead of metal weight. The method of measuring angle which is made by the specimen is shown in figure. 4) Effects of Detergent; 0.2% of detergent solution is provided before class. The amount of oil and carbon black is specified. Students have generally agreed that the improved methods were better than those in the textbooks after they made the above 4 recommendable experiments(p<.001)